This paper's major focus is on particular physical-motor domain contributers to the total effectiveness of the person. Topics addressed include: (1) the integrity of the organism; (2) mental achievement; (3) personal-social effectiveness; (4) the nature, extent, and significance of individual differences; and (5) the configuration of physical-motor traits as embodied within the person. Physical fitness components referred to are Roger's Strength Battery and the Medford Boys' Growth Study. Many studies cited in this paper have produced considerable evidence to substantiate physical activity as vital to attaining and maintaining the integrity of the human organism. Evidence presented in various studies generally favors positive relationships between mental achievement and physical and motor fitness components. Significant positive relationships are also revealed between physical and motor fitness tests and personal-social traits. It is noted that certain physical and motor traits, such as maturity, physique type, and body size are not subject to any improvement through exercise; however, other traits, such as muscular strength, muscular endurance, and circulatory-respiratory endurance are definitely improvable through proper exercise regimens. Various profiles of athletes illustrate the configuration of physical motor traits involved in a person's performance. (JMK)